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Diffstat (limited to 'yocto-poky/meta/classes/externalsrc.bbclass')
-rw-r--r-- | yocto-poky/meta/classes/externalsrc.bbclass | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/yocto-poky/meta/classes/externalsrc.bbclass b/yocto-poky/meta/classes/externalsrc.bbclass new file mode 100644 index 000000000..0fa5817d9 --- /dev/null +++ b/yocto-poky/meta/classes/externalsrc.bbclass @@ -0,0 +1,92 @@ +# Copyright (C) 2012 Linux Foundation +# Author: Richard Purdie +# Some code and influence taken from srctree.bbclass: +# Copyright (C) 2009 Chris Larson <clarson@kergoth.com> +# Released under the MIT license (see COPYING.MIT for the terms) +# +# externalsrc.bbclass enables use of an existing source tree, usually external to +# the build system to build a piece of software rather than the usual fetch/unpack/patch +# process. +# +# To use, add externalsrc to the global inherit and set EXTERNALSRC to point at the +# directory you want to use containing the sources e.g. from local.conf for a recipe +# called "myrecipe" you would do: +# +# INHERIT += "externalsrc" +# EXTERNALSRC_pn-myrecipe = "/path/to/my/source/tree" +# +# In order to make this class work for both target and native versions (or with +# multilibs/cross or other BBCLASSEXTEND variants), B is set to point to a separate +# directory under the work directory (split source and build directories). This is +# the default, but the build directory can be set to the source directory if +# circumstances dictate by setting EXTERNALSRC_BUILD to the same value, e.g.: +# +# EXTERNALSRC_BUILD_pn-myrecipe = "/path/to/my/source/tree" +# + +SRCTREECOVEREDTASKS ?= "do_patch do_unpack do_fetch" + +python () { + externalsrc = d.getVar('EXTERNALSRC', True) + if externalsrc: + d.setVar('S', externalsrc) + externalsrcbuild = d.getVar('EXTERNALSRC_BUILD', True) + if externalsrcbuild: + d.setVar('B', externalsrcbuild) + else: + d.setVar('B', '${WORKDIR}/${BPN}-${PV}/') + + local_srcuri = [] + fetch = bb.fetch2.Fetch((d.getVar('SRC_URI', True) or '').split(), d) + for url in fetch.urls: + url_data = fetch.ud[url] + parm = url_data.parm + if (url_data.type == 'file' or + 'type' in parm and parm['type'] == 'kmeta'): + local_srcuri.append(url) + + d.setVar('SRC_URI', ' '.join(local_srcuri)) + + if '{SRCPV}' in d.getVar('PV', False): + # Dummy value because the default function can't be called with blank SRC_URI + d.setVar('SRCPV', '999') + + tasks = filter(lambda k: d.getVarFlag(k, "task"), d.keys()) + + for task in tasks: + if task.endswith("_setscene"): + # sstate is never going to work for external source trees, disable it + bb.build.deltask(task, d) + else: + # Since configure will likely touch ${S}, ensure only we lock so one task has access at a time + d.appendVarFlag(task, "lockfiles", " ${S}/singletask.lock") + + # We do not want our source to be wiped out, ever (kernel.bbclass does this for do_clean) + cleandirs = (d.getVarFlag(task, 'cleandirs', False) or '').split() + setvalue = False + for cleandir in cleandirs[:]: + if d.expand(cleandir) == externalsrc: + cleandirs.remove(cleandir) + setvalue = True + if setvalue: + d.setVarFlag(task, 'cleandirs', ' '.join(cleandirs)) + + fetch_tasks = ['do_fetch', 'do_unpack'] + # If we deltask do_patch, there's no dependency to ensure do_unpack gets run, so add one + d.appendVarFlag('do_configure', 'deps', ['do_unpack']) + + for task in d.getVar("SRCTREECOVEREDTASKS", True).split(): + if local_srcuri and task in fetch_tasks: + continue + bb.build.deltask(task, d) + + d.prependVarFlag('do_compile', 'prefuncs', "externalsrc_compile_prefunc ") + + # Ensure compilation happens every time + d.setVarFlag('do_compile', 'nostamp', '1') +} + +python externalsrc_compile_prefunc() { + # Make it obvious that this is happening, since forgetting about it could lead to much confusion + bb.warn('Compiling %s from external source %s' % (d.getVar('PN', True), d.getVar('EXTERNALSRC', True))) +} |